Re: [xsl] required parameter

[Michael Kay <mike@xxxxxxxxxxxx>]

My guess would be that the mode="helper" template is being called from 
somewhere other than the apply-templates call you are showing us. 
Without a complete stylesheet, it's impossible to verify that.

Incidentally, if the input is as you show it, then the first 
<xsl:sequence> doesn't select anything, and neither does the select in 
the with-param (or rather, it selects an empty sequence, which shouldn't 
in itself violate the required="yes" requirement.)

Michael Kay
Saxonica

On 18/10/2011 16:17, Merrilees, David wrote:
> Hi
>
> I have an XSLT problem I don't understand. I pass a value in a parameter to a template like so:
>
> <xsl:template match="/" as="element()">
>         <div id="languageOption">
>                <xsl:sequence select="model:model/model:LanguageOptions" />
>                <xsl:apply-templates select="f:action-form('fLanguage', 'Set', 'Language', 'post')" mode="helper">
>                       <xsl:with-param name="language-options" select="model:model/model:LanguageOptions" />
>                </xsl:apply-templates>
>         </div>
> </xsl:template>
>
> Which is matched by this template:
>
> <xsl:template mode="helper" match="form[@id = 'fLanguage']">
>         <xsl:param name="language-options" required="yes"/>
> </xsl:template>
>
> and I get the error: 'No value supplied for required parameter $language-options'. Problem is, if I remove the required attribute, the line '<xsl:sequence select="model:model/model:LanguageOptions" />' works fine.
>
> Input XML looks like this:
>
>         <model:LanguageOptions>
>                <model:SelectListItem>
>                       <model:Selected>false</model:Selected>
>                       <model:Text>Hesky</model:Text>
>                       <model:Value>cs-CZ</model:Value>
>                </model:SelectListItem>
>                <model:SelectListItem>
>                       <model:Selected>true</model:Selected>
>                       <model:Text>English</model:Text>
>                       <model:Value>en-GB</model:Value>
>                </model:SelectListItem>
>         </model:LanguageOptions>
>
> Any bright ideas?
>
> Thanks
>
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